This is YOUR time. This is YOUR community. Welcome to GRIT.
You’re not just here to work out—you’re here to rise. GRIT is where strong, confident women come together to push limits, lift each other up, and crush goals. Every class is designed to challenge your body and ignite your spirit, whether you’re throwing punches in boxing or powering through mat pilates.
The energy? Unstoppable. The community? Unbreakable. The playlist? Fire.
At GRIT, we believe your mental toughness—your GRIT—is your ultimate superpower. Step into your strength. Transform your mindset. Own your journey.
Because you’re capable of more than you ever imagined.
out—you’re here to rise up. 

OUR FOUNDER

BRIT RETTIG WOLD

Brittani (Brit) Rettig Wold founded GRIT Fitness in 2015, building an empowering fitness community around her belief that mental grit—“passion and perseverance for long-term goals”—is the key to both fitness success and living our fullest lives. At the time, she was a 30-year-old single woman with a big dream and a $30K nest egg. With relentless determination and heart, Brit grew GRIT Fitness from one small studio into multiple locations, a team of over 50, and Dallas’ #1 women’s fitness community.
Brit believes that pushing through physical challenges prepares us to overcome life’s bigger obstacles: “We can’t always control life’s circumstances, but we can always control how we respond. We are stronger than our circumstances.”
Today, Brit is most proud of her role as a wife and mom to three beautiful kids. She’s passionate about modeling healthy habits and balance, not just for her family but for the broader community of women and families she serves. Her mission is to inspire others to prioritize wellness, confidence, and community connection in every season of life.
Brit earned her undergraduate degree from Cornell University, where she captained the women’s varsity basketball team, and holds an MBA from Harvard Business School. She is also a graduate of the Dallas Regional Chamber’s Leadership Dallas Class of 2020.

VOTED BEST GYM IN DALLAS

D MAGAZINE - BEST FITNESS PROGRAM
"Every HIIT, spin, yoga, kickboxing, and dance class is a high-energy experience with a hip-hop playlist."

DALLASITES 101 - BEST NEW DALLAS GYM
"Grit Fitness is more than just a fitness studio. Founder, Brittani Rettig has created a culture surrounded community, female empowerment, mental health and self-confidence, and thus created a cult-like fan base of followers who simply put, LOVE her workouts."

​DALLAS OBSERVER - BEST DALLAS GYM
"Today, gyms are more likely to be measured by the way they make you feel, the sense of community they provide and whether their offerings address the mind, body and soul. Now, a stellar workout is about total wellness, which is why GRIT Fitness tops our list. "